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The face of a new £5 coin to celebrate the 5th Birthday of Prince George of Cambridge (Image: PA)

The flip side of the new £5 coin (Image: PA)

George was pictured playing with a toy gun, toy knife and handcuffs at a polo match in June.

He joined younger sister Princess Charlotte outside the Lindo Wing in April as they visited their newborn baby brother Louis with their father William.

Nicola Howell, director of consumer business at the Royal Mint, said: "The birth of Prince George altered the course of history in the United Kingdom and we are pleased to be marking the fifth birthday of our future king."

(Image: PA)

The Royal Mint also released coins to mark George's first and second birthdays, and his christening, and gave "lucky" silver pennies to babies born on the same day as him in 2013.

The brilliant uncirculated £5 coin costs £13.

A silver proof version is also available for £82.50, and a celebration sovereign, which will be struck on July 22 2018, is priced at £500.